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Overview

The WIWB Import connects to the Hydronet WIWB API and has support for downloading observations and forecasts for both scalar and grid data. WIWB has a concept of DataSources which have to be configured as a property of the import. Using the meta data api of  the WIWB API the type of data is determined and processed accordingly.

 

More about WIWB

WIWB is the Dutch national database for storage and dissemination of weather related data, specifically for the Dutch water sector. It has been developed in 2017 by HydroLogic, HKV and HydroConsult for Het Waterschapshuis, a national body that represents all Dutch water boards. The WIWB database is based on the HydroNET platform (www.hydronet.com) and offers a REST API for retrieving data and metadata. WIWB contains weather observations and forecasts, based on weather stations, meteorological radar data and numerical weather models.

WIWB is intended for professional use only by Dutch water boards. It is not intended for public or commercial use. Only officials from Dutch water boards can request access to the WIWB API. More information on specifications and use of the WIWB API can be requested from the WWIB helpdesk (helpdeks@hydrologic.com).

Access to WIWB API

Access to the WIWIB API can be requested from the Waterschapshuis Water (HWH) by sending an e-mail to mr. Jack Bosman. Please list the following items in your e-mail

  • Organisation name
  • Contact person and contact details (e-mail and telephone number).
  • List with IP addresses that require access to the API.  
  • Short explanation of intended use:
    • Systems to be connected to the API
    • Required data sources
    • Expected data request per time interval.

HWH will forward the required information to the WIWB back-office operated by HydroLogic. Your account will be configured within 5 days after the request was received by the WIWB back office.

More info about WIWB at HWH can be found here.

 

Import Configuration

To configure the WIWB import the dataSource property has to be specified. Se the list of supported dataSource values in the next section.

For ensembles the ensemble id can be configured using the ensembleId property. In case no property is configured, the default value "EPS" will be used.

DataSource values

Valid values for dataSource are provided by the meta data api, but at the time of writing the following dataSources are available:

  • Knmi.Evaporation
  • Knmi.RegionalEps
    Note that the ensemble members 1-50 are the real ensemble, while member 51 and 52 are the control and deterministic runs. So it is advised to store the ensemble in a temporary ensembleId and to postprocess the members 1-50 to the real ensemble.
  • Knmi.Synops
  • Knmi.AwsTenMinutes

 

Available, but not tested:

  • Knmi.Radar.Uncorrected
  • Knmi.Radar.CorrectedC2
  • Knmi.Radar.CorrectedB
  • Knmi.Radar.CorrectedD2
  • Knmi.Hirlam
  • Knmi.Harmonie
  • Knmi.IrisUnvalidated
  • Knmi.IrisValidated
  • Knmi.WaterSetupEps
  • Knmi.Warnings
  • Meteobase.Evaporation.Makkink
  • Meteobase.Evaporation.PennmanMonteith
  • Meteobase.Precipitation
  • Knmi.WaquaTs
  • Knmi.Naval.Warnings
  • Knmi.Naval.Forecasts
  • Knmi.FromMeteobase.Synops
  • Knmi.FromMeteobase.Evaporation

All times are in UTC.

Missing values.

If the WIWB specifies the missing value for a datasource, this will be used by FEWS. The missing value can also be specified in the import configuration as well. The default value for missing value is -9999 for the WIWB API.

Grid definitions

The WIWB API can provide the grid definitions of the models. The WIWB Import will log the Grid Definition if debug is enabled during the import.

View period

Where appropriate a viewPeriod can be configured. The view period can be no longer than one year, since the WIWP api doesn't support periods longer than that.

For model forecasts only the latest forecast will be downloaded.

Examples

This example is configured to import scalar observations from the Knmi.AwsTenMinutes dataSource:

Example AwsTenMinutes
		<import>
		<general>
			<importType>WIWB</importType>
			<serverUrl>https://wiwb.hydronet.com/api</serverUrl>
			<user>$WIWB_USER$</user>
			<password>$WIWB_PW$</password>
			<relativeViewPeriod unit="hour" start="-120" end="0" startOverrulable="true"/>
			<idMapId>IdImportWIWB_obs</idMapId>
			<dataFeedId>WIWB (Knmi.AwsTenMinutes)</dataFeedId>
		</general>
		<properties>
			<string key="dataSource" value="Knmi.AwsTenMinutes"/>
		</properties>
		<timeSeriesSet>
			<moduleInstanceId>ImportKNMI</moduleInstanceId>
			<valueType>scalar</valueType>
			<parameterId>P.meting</parameterId>
			<locationSetId>KNMI-EVP</locationSetId>
			<timeSeriesType>external historical</timeSeriesType>
			<timeStep unit="minute" multiplier="10"/>
			<readWriteMode>add originals</readWriteMode>
		</timeSeriesSet>
	</import>


The following example is configured for importing grids from the Knmi.Radar.Uncorrected dataSource:

		<import>
		<general>
			<importType>WIWB</importType>
			<serverUrl>https://wiwb.hydronet.com/api</serverUrl>
			<user>$WIWB_USER$</user>
			<password>$WIWB_PW$</password>
			<relativeViewPeriod unit="hour" start="-12" end="-10" startOverrulable="false"/>
			<idMapId>IdImportWIWB_obs</idMapId>
			<dataFeedId>WIWB (Knmi.Radar.Uncorrected)</dataFeedId>
		</general>
		<properties>
			<string key="dataSource" value="Knmi.Radar.Uncorrected"/>
			<string value="true" key="keepDownloadDataInTempFolder" />
		</properties>
		<timeSeriesSet>
			<moduleInstanceId>ImportKNMI</moduleInstanceId>
			<valueType>grid</valueType>
			<parameterId>P.radar</parameterId>
			<qualifierId>realtime</qualifierId>
			<locationId>Hydronet_radar</locationId>
			<timeSeriesType>external historical</timeSeriesType>
			<timeStep unit="nonequidistant"/>
			<readWriteMode>add originals</readWriteMode>
			<synchLevel>6</synchLevel>
		</timeSeriesSet>
	</import>

Example of idMapping to some of the WIWB parameters in the IdImportWIWB_obs.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<idMap version="1.1" xmlns="http://www.wldelft.nl/fews" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wldelft.nl/fews http://fews.wldelft.nl/schemas/version1.0/idMap.xsd">
	<parameter external="Evaporation" internal="E.meting"/>
	<parameter external="P" internal="P.meting"/>
	<parameter external="P" internal="P.radar" internalQualifier="realtime"/>
	<parameter external="WindDirection" internal="Wind.meting.richting"/>
	<parameter external="WindSpeed" internal="Wind.meting.snelheid"/>
	<parameter external="TMP" internal="T.meting"/>
	<location external="Hydronet_radar" internal="Hydronet_radar"/>
	<locationIdPattern internalLocationSet="KNMI-EVP" internalLocationPattern="KNMI_*" externalLocationPattern="06*"/>
	<enableOneToOneMapping/>
</idMap>
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